{
  "manageEntity": {
    "action": "Save",
    "entityId": "1369242905",
    "entityType": "Track",
    "nonce": "0xca6e3df75c7f2fbcf7a085b5d029c617dc86de47e8b696ae07865ffc15f72ba3",
    "signature": "0xfe2661de3ad3e370b6940db2f4f95b1fffcda9946e47d329b61d9f28adc8af3c01b25fc9b1202936e8bdd0db8869f50d704155a4fd6449e86097c7aaf003f1b11b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}